Slot-forming machine.



G. J. LUCK.

SLOT FORMING MACHINE.

APPLICATION FILED JUNE 23,1910.

1,165,790. Patented Dec. 28, 1915.

I 0 I WITNEEEE5 INVEN'T'EIF'\ a; Guy/5Z4 I WWAW'TU NEY IA PLANOGRAPH 1:0..WASmNnxm G. J. LUCK.

SLOT FORMING MACHINE.

APPLICATION men JUNE 23. 1910.

Patented Dec. 28, 1915.,

2 SHEETS-SHEET 2.

INVENTEIF- GUS'IAl/E J. LUCK, OF MTL'WAUKEE,

TTED T @ldll llljlfil Ti) ALLIS-CHALMER-S WISCUNSIN, ASSIGNOR, BY MESNE ASSIGNMENTS, M'ANUFAGTURING COMPANY, A CORPORATION OF DELAW'ABE.

SLOT-FORMING MACHINE.

Application filed June 23, 1910.

To all whom it may concern Be it known that l, Gusrnvn J. Loon, a citizen of the United Eltates, residing at Milwaukee, in the county of Milwaukee and State of ll isconsin, have invented a certain no Y and useful Improvement in Slot-Formi119 lrlachines, of which the following is a specification.

This invention relates to improveniients in the construction of slot forming machines, and particularly to improvements in machines for forming a series of substantially radial slots around the periphery of a body of revolution.

An object of the invention is to provide a machine, for forming a series of slots in a body, which is simple in construction and eflicient in operation.

Another object is to provide a machine in which the pitch of slots cut around body of revolution can be easily changed and in which the angularity of the individual slots relative to the adjacent radii of revolution of the body can also be changed as desired.

Still another object is to provide a slot forming device which can be applied to an ordinary planer or similar machine, without changing the general structure thereof and so that the normal operation of the machine will operate the device to automatically form the slots at the desired pitch along the body being machined A clear conception of one embodiment of the invention can beobtained by referring to the accompanying drawings in which like reference characters designate the same or similar parts in different views.

Figure l is a fragmentary front view of a. planer having the invention applied thereto, the cleaning device for the cutter having been omitted in order to avoid unnecessary complication. Fig. 2 is a fragmentary side view, partly in section, of the device as shown in Fig. 1 viewed. from the right. Fig. 3 is a fragmentary section through the planer bed and work supporting member or plate, showing one of the lifting wedges and operators therefor. Fig. 4 is an enlarged end front view of the cutter showing also, diagramatically, afragment of a body of revolution being slotted and the center line of the supporting members. Fig. 5 is a front View of the cutter cleaning device, showing the attachment Specification of Letters Patent.

Serial No. 568,439.

thereof to a fragment of the supporting frame.

The drawings and specification of this dis :losure show the invention applied to a planer of. the well known type in which a planer bed reciprocates on a bed plate and passes between two uprights or vertical tool supporting frames. The planer bed is ordinarily provided with a rack and pinion or similar device by means of which the reciprocation of the bed is produced. The extent of travel of the bed is determined by reversing levers and stops at the side of the machine, the stops being adjustable along the length of the planer thus providing a means for lengthening or shortening the stroke as desired. The work is ordinarily carried directly upon the planer bed, being clamped thereon, and is operated upon by a tool carried between the uprights. The driving and reversing means have been omitted in the present disclosure as they form no part of the present invention and their construction is well known to persons skilled in the art.

Referring to the drawings, the planer bed. 42, having the guides formed at the bottom thereof, is adapted to be reciprocated in the usual manner on the. bed plate 44:, see Figs. 1, 2, 5. The frames or uprights 30, 31, project upward from the bed plate :14: on either side of the planer bed 42 and are connected by cross ribs 32,

The mounting pin 20 is held with its axis parallel to the travel of the bed 42 by means of the adjusting block 11 through which the pin 20 passes. The nut 53 serves to clamp the pin 20 into the block 11, the clamping being suiiicient only to prevent easy tw'sting of the pin 20 within the block. The overhanging end of the pin 20 is provided with a key 54: by means of which the ratchet wieel 1 is fixed to the mounting pin 20. The disk or other body 52 of revolution is also fixed to the overhanging end of the pin 20 by means of the key 54, being prevented from moving longitudinally of the pin 20 by means of a washer 21 and clamping nut 23. The ram 24, which is mounted in a dovetail groove formed in the bottom of the mounting plate 12, contacts with the body 52, being forced against the body 52 by means of a screw This ram 24 serves to stiffen the body 52, thus preventing vibration of the body near the point of application of the operating tool. The ratchet wheel guard 22 is fastened to the adjusting block 11 and serves to protect the notches 5 of the wheel 1 against possible injury.

The adjustable block 11 is slid-ably mounted in a vertical slot formed in the mounting plate 12. The vertical slot formed in the mounting plate 12 is closed at its upper end by a plate 29 in the center of which the bevel gear it is rotate. ly mounted. The vertical ad usting rod 13,

which is fixed to the upper end of the block 11, is threaded along its upper portion and passes through the hub of the gear 14, the threats coacting with internal threads formed within the gear Ll. With this arrangement of elements it will be seen that rotation of the gear 14- will cause the rod 13, and hence the block 11 and the elements carried thereby. to move vertically relative to the plate 12. The horizontal shaft 16 is mounted in bearings 17, 18, which fixed relative to the mounting plate 12. The bevel gear 15. which is fastened to the end of the shaft 1'6, meshes with tne gear 1%. The removable handle 19 fits over a square portion formed on the overhanging end of the shaft 16 and serves to rotate the shaft 16 and gears 15, 1 1:.

The mounting plate 12 is slidably mounted on the supporting frame 27. which supporting frame is in turn fixed to the uprights 8O, 31, and the cross rib The guide bars 25. 26, are secured to the frame 27 in such a manner as to form parallel vertical recesses within which the nmunting plate 12 coacts and is adapted to be vertically shifted. The guide bars 2:). :26, are held in place by bolts l6, the removal of which permits the removal of the plate 12 and the elements carried thereby.

The wedges S-l, see Figs. 1, 8, have inwardly projecting lugs and are slidably mounted upon inwardly projecting flanges 50 of the frame 27 by means of guides 35 formed on the bottom of the wedges 3i and coacting in grooves formed in the flai 50. The upper surfaces of the wedges coact with lower surfaces of wedge blocks 33 fastened to the bottom of the plate 12. The wedge actuatoi's 36 are fastened to the planer bed i at the front end there of and have upwardly projecting ends which cross theprojecting lugs 87. The wedge actuators 51 are fastened to the planer bed 42 at the rear end thereof and also have upwardly projecting ends which cross the projecting lugs 37 of the wedges 3d. The wedges 34;, wedge blocks 33 and actuators 3G, 51, comprise means for auto matically shifting the mounting plate 12 and ratchet wheel 1 a predetermined amount respectively to and from the cutter 38 at the termination of each reciprocation of the cutter.

The breaching saw or cutter 38 is constructed of a series of sections and is being mounted on the cutter holder 10 clamped thereto by means of the p ates 89 and clamping bolts passing through the plates. The holder -10 is adjustably fixed to the planer bed -12 by means of bolts 4:1 which coact in the holding grooves of the planer bed 452 and pass through transverse slots formed in the holder 4:0. As shown, the cutter is located slightly to the right of the center line ill of the planer. see Fig. 4.. but the cutter may be shifted to any position relative to said center line, within certain limits. The cutter has teeth which increase in height as they approach the front end of the planer bed 42, the difference in elevation between two successive teeth being the amount of feed or of the cut tal'en by each tootln In the present disclosure the cutter 38 is provided with a projection 17 formed at one side thereof which adapts the cutter'tothe formation of slots having notches at the sides thereof as shown in Fig. -1 such slots being particularly adapted for the securing ofturbine blades to the slotted member.

The autmnatic shifting means for angularly shifting the mounting ratchet wheel 1 consists of a pawl 2 which is pivoted to a lever c intermediate the ends thereof, see I? l. The pawl 2 is held in coacticn with the notches of the wheel 1 by means of a spring 3. The pin 9 pivotally connects the outer end of the lever -Llwith the guard 22. The link 6 clamped in any desired i'iXed position. in a slot 10 formed in the upright 31 by means of a clamping bolt 8. pin at the lower end of the link coacts in a slot- 7 in the lever t will be noted that the link 6 does not swing upon the bolt 8, but this link may be shift d and secured in any desired angular position relative to the bolt 8 by unscrewing and retightening the bolt.

The cutter cleaning device. shown in Fig. 5, is driven by a grooved wheel 7 #l which contacts frictionally with a ridge formed on the upper side of the rail 43. The rail 43 has its upper surfaces parallel with the plane of he cues of the teeth of the cutter 538. thus giving the upper surfaces of the rail 43 a slight pitch. toward the rear end of the planer bed a2.

T he drive wneel 74: is fixed to one end of a horizontal shaft 73 which is mounted in a. plate 63. The bevel gear 72 is fastened to the opposite end of the shaft 73 and meshes with a bevel gear '71 fixed to the lower end of the vertical shaft 67'. The shaft 6? is mounted in bearings formed one on each of the plates 68., 65, and has a second bevel gear 63 fined to its upper end. The

bevel gear 63 meshes with a gear 62 which is mounted upon one end of a short transverse horizontal shaft 80. The shaft is rotatably mounted in a bearing formed in one with the plate 65, and has a rope wheel 61 fastened to its outer end.

The bearing supporting plates (35, (58, are each fastened to the cleaner support 59. The cleaner support 59 is slidably mounted in grooves 28 formed in the edges of the guide bar 26, and has a stop 60 at its upper end which projects over acorner of the supporting plate It will thus be noted that as the Wheel 74: is advanced along the rail -l-3. the cleaner support 59 will .rise an amount equal to the pitch of the cutter The support 59 and elements carried thereby may, moreover, be lifted bodily from the upper end of the guide bar The brush frame 69 pivoted to the outwardly projecting lugs 66 formed on the support 59 by means of pins '75, and may be swung from the position shown in Fig. 5 to a position. parallel to the rail The rotary brush 58 is mounted at the end of the brush frame 69 and has a rope wheel mounted concentrically therewith. The driving rope or cable coacts around the peripheries of the wheels 61, 70, and serves to transmit rotary motion between them.

During the operation of the device, the body 52, which is to be slotted, is mounted on the pin 20 so that its periphery lies below the path of the cutter 38. The planer bed 42 is then given the usual reciprocating motion, carrying with it the cutter 38. The reversing stops for the bed are placed approximately in line with the wedge actuators 36, 51, respectively, thus causing the bed to reverse when the actuator 36 has about reached the rear end of the plate 12 in its forward travel, and also when the actuator 51 has reached the position shown in Fig. 2. During the reversing of the travel of the bed 42 after having completed a cut, it necessary to advance the periphery of the body 52 preparatory "to cutting the next succeeding notch. As the cutter 38 leaves the body 52 during forward travel of the bed the wedge actuators 36 strike the proj ecting lugs 37 and push the wedges 3% forward so that the broadest portions of the wedges are in coaction with the blocks 33. This forward forcing of the wedges 34 raises the plate 12 and the elements carried thereby away from the cutter 38, the plate 12 sliding on the supporting frame 27. During this shifting, the link 6 and pin at the end thereof remain stationary relative to the frame 27, while the pin 9 and pawl 2 move up with the plate 12, he link f in the meantime both swinging and sliding on the pin at the lower end of the link 6. Unless otherwise affected, all points on the plate 12 and all elements carried thereby, will travel an equal amount due to the movement of the wed es The pin 9 therefore carries the adjacent end of the lever a a distance equal to the travel of the plate 12, but owing to the location of the pivot of the pawl 2 intermediate the stationary pivot of the lever a and the moving pin 9, the pawl 2 travels only a fraction of the total distance covered by the pin 9. Since the end of the pawl coacts with the notches 5 at the periphery of the ratchet wheel 1, and as these notches tend to move a dis tance equal to the travel of the plate 12, the difference in travel between the pawl 2 and notches 5 coacting therewith, is taken up in rotation of the wheel 1 and hence of the body about the axis of the mounting pin 20. By adjusting the link 6 relative to the slot 7, it will be seen that any desired differ ence in travel between the pawl 2 and notches 5 can be obtained, thus permitting ready variation of the pitch of the slots being cut around the periphery of the body 52. It will also be noted that with the same setting of the link (5, the pitch will always be equal, providing the same wedges 34: are used.

After the body and the mounting means have been thus angularly shifted, the travel of the bed 42 is reversed, the backward travel being at considerably higher speed than that maintained during forward travel. as the bed recedes to the position shown in Fig. the wedge acutators 51 strike the projecting lugs 37, pushing the wedges back so that the narrowest portions of the wedges 23 i coact with the blocks 33. During such shifting of the wedges 3%, the weight of the plate and of the ele .ments carried thereby, causes the entire mounting means to again approach the path of the cutter 38 until upon reaching the position shown in Fig. 2, the mechanism is again ready for forward travel or cutting stroke.

If it is desired to operate the machine on a body of greater diameter, it is necessary to raise the mounting pin 20 and vice versa. This is done by turning the handle 19, thus causing the shaft 16 and. gears 1%, 15, to rotate. Has the gear fl is rotated, the rod 13 and elements carried thereby are eith a raised or lowered, thus raising or lowering the center of the mounting pin 20. During such shifting of the pin 20 the bolt 8 must also be shifted a relative amount in the slot 10.

As the bed 42 travels forward, the grooved wheel H- is rotated owing to its contact with the rail The contact between these elements is maintained by the weight of the support and the elements carried thereby, which weight acts on the wheel 7%. As the wheel 74: is rotated, the rotary motion is transmitted through the shafts 73, 67, 80, gears in, 71, i8, 62, to the rope wheel 61 and from these through the cable 64 to the brush 58. The rotation of the brush 58 prevents chips or foreign matter from lodging in the teeth oi": the cutter 38. The brush 58 furthermore retains its location relative to the teeth of the cutter 38 due to the pitch of the top of the rail 43.

Before the backward travel of the bed i2 is begun, and during lifting of the plate 12, the brush 58 is, in the construction shown, also liited away from the cutter 38 by the coaction of the corner of the plate 12 under the stop 60, this coaction resulting since the upward travel of the plate 12 is considerably greater than the upward travel of the support 59 due to the pitch oi the rail 43.

It should be wider-stood that it is not desired to be limited to the exact details oi construction shown and described, for obious modifications within the scope of the appended claims will occur to a person skilled in the art. I

it is claimed and desired to secure by Letters Patent;-

1. Elna slot forming machine, a reciprocating cutter, means for mounting a body to he slotted in the path of said cutter, means for automatically shitting said mounting means a predetermined amount respectively to and from said cutter at the termination or? each reciprocation oi aid cutter, and automatically actuated means for angularly shitting said mounting means.

2. In a slot forming machine, a movable cutter, means for mounting in the path oi said cutter a body to be slotted, means for automatically moving said mounting means away from said cutter, and automatically actuated means :tor angularly shifting said mounting means a predetermined amount.

3. In a slot forming machine, a reciprocating cutter, means for mounting in the path of said cutter a body to be slotted, "leans for automatically moving said mounting means away from said cutter, and aut0- matically actuated. means for angularly shitting said mounting means.

t. In a slot forming machine, a movable cutter, adj ustable means for mounting in the path of said cutter a body to be slotted, n cans for automatically moving said mounting means aw; y from said cutter, and automatically actuated means for angularly shifting said mounting means.

In a slot forming machine, a reciprocating cutter, means for mounting in the path or said cutter a bony to be slotted, means for automatically shifting said mounting means away from said cutter at the termination of its cutting stroke, means for shifting said mounting means toward said cutter at the termination of its return stroke, and automatically actuated means for angularly shifting said mounting means.

6. In a slot forming machine, a cutter having a plurality of successive teeth, means for reciprocating said cutter, means for mounting a body in the path of said cutter, the relation 01 the mounting of said body to the path oi reciprocation of said cutter being such that said cutter forms a completed slot in said bony during each reciprocation, means for moving said mounting means away from said cutter, and means for angular-1y shifting said mounting means.

7. in a slot forming machine, a movable cutter, mca: s for mounting in the path oi said cutter a body to be slotted, means for automatically moving said mounting means away from said cutter, and means actuated by said automatically moving means for angularly shitting said mounting means a predetermined amount.

8. in a slot forming machine, a movable cutter, adjustable means for mounting in te path of said cutter a body to be slotted, means for automatically moving said mounting means away from said cutter, automatically ctuated means for angularly shitting said mounting means, and means for permitting adjustment oi the degree of angular shifting of said mounting means.

9. In a slot forming machine, a movable cutter, means for mounting in the path of said cutter a body to be slotted, means for automatically moving said mounting means away from said cutter, automatically actuated means for angularly shifting said mounting means, and means for peanitting adjustment oi the degree of angular shitting of said mounting means.

10. in a slot forming machine, a movable cutter, adjustable means for mounting in the path 01 said cutter a body to be slotted, means for automaticallymoving said mounting means away from said cutter, means actuated by said automatically moving means for augularly shifting said mounting means, and means "for permitting adjustment of the degree of angular shifting of said mounting means.

In testimony. whereof, I ailix my signature in the presence of two witnesses.

zUSTl-UIE J. LUCK. Witnesses H. G. Cass,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

